/Engine/Source/Runtime/UMG/Public/Blueprint/UserWidget.h
Called after a character is entered while this widget has focus
Returns whether the event was handled, along with other possible actions
[FEventReply](API\Runtime\UMG\Components\FEventReply) OnKeyChar ( [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) MyGeometry, [FCharacterEvent](API\Runtime\SlateCore\Input\FCharacterEvent) InCharacterEvent )